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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
12 * more details.
13 */
14
15#ifndef _UAPI_ASM_TILE_PTRACE_H
16#define _UAPI_ASM_TILE_PTRACE_H
17
18#include <arch/chip.h>
19#include <arch/abi.h>
20
21/* These must match struct pt_regs, below. */
22#if CHIP_WORD_SIZE() == 32
23#define PTREGS_OFFSET_REG(n) ((n)*4)
24#else
25#define PTREGS_OFFSET_REG(n) ((n)*8)
26#endif
27#define PTREGS_OFFSET_BASE 0
28#define PTREGS_OFFSET_TP PTREGS_OFFSET_REG(53)
29#define PTREGS_OFFSET_SP PTREGS_OFFSET_REG(54)
30#define PTREGS_OFFSET_LR PTREGS_OFFSET_REG(55)
31#define PTREGS_NR_GPRS 56
32#define PTREGS_OFFSET_PC PTREGS_OFFSET_REG(56)
33#define PTREGS_OFFSET_EX1 PTREGS_OFFSET_REG(57)
34#define PTREGS_OFFSET_FAULTNUM PTREGS_OFFSET_REG(58)
35#define PTREGS_OFFSET_ORIG_R0 PTREGS_OFFSET_REG(59)
36#define PTREGS_OFFSET_FLAGS PTREGS_OFFSET_REG(60)
37#if CHIP_HAS_CMPEXCH()
38#define PTREGS_OFFSET_CMPEXCH PTREGS_OFFSET_REG(61)
39#endif
40#define PTREGS_SIZE PTREGS_OFFSET_REG(64)
41
42
43#ifndef __ASSEMBLY__
44
45#ifndef __KERNEL__
46/* Provide appropriate length type to userspace regardless of -m32/-m64. */
47typedef uint_reg_t pt_reg_t;
48#endif
49
50/*
51 * This struct defines the way the registers are stored on the stack during a
52 * system call or exception. "struct sigcontext" has the same shape.
53 */
54struct pt_regs {
55 union {
56 /* Saved main processor registers; 56..63 are special. */
57 pt_reg_t regs[56];
58 struct {
59 pt_reg_t __regs[53];
60 pt_reg_t tp; /* aliases regs[TREG_TP] */
61 pt_reg_t sp; /* aliases regs[TREG_SP] */
62 pt_reg_t lr; /* aliases regs[TREG_LR] */
63 };
64 };
65
66 /* Saved special registers. */
67 pt_reg_t pc; /* stored in EX_CONTEXT_K_0 */
68 pt_reg_t ex1; /* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
69 pt_reg_t faultnum; /* fault number (INT_SWINT_1 for syscall) */
70 pt_reg_t orig_r0; /* r0 at syscall entry, else zero */
71 pt_reg_t flags; /* flags (see below) */
72#if !CHIP_HAS_CMPEXCH()
73 pt_reg_t pad[3];
74#else
75 pt_reg_t cmpexch; /* value of CMPEXCH_VALUE SPR at interrupt */
76 pt_reg_t pad[2];
77#endif
78};
79
80#endif /* __ASSEMBLY__ */
81
82#define PTRACE_GETREGS 12
83#define PTRACE_SETREGS 13
84#define PTRACE_GETFPREGS 14
85#define PTRACE_SETFPREGS 15
86
87/* Support TILE-specific ptrace options, with events starting at 16. */
88#define PTRACE_EVENT_MIGRATE 16
89#define PTRACE_O_TRACEMIGRATE (1 << PTRACE_EVENT_MIGRATE)
90
91/*
92 * Flag bits in pt_regs.flags that are part of the ptrace API.
93 * We start our numbering higher up to avoid confusion with the
94 * non-ABI kernel-internal values that use the low 16 bits.
95 */
96#define PT_FLAGS_COMPAT 0x10000 /* process is an -m32 compat process */
97
98#endif /* _UAPI_ASM_TILE_PTRACE_H */